Rolls for manufacturing tie-plates.



No. 650,87l. Patented lune 5, I900. C. SHIVELY.

ROLLS FOR MANUFACTURING TIE PLATES.

(Applicatibn flledleb. 19, 1900.) (No Model.) 2 Sheets-Sheet l.

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No. 650,87L Patented June 5, I900. C. SHIVELY.

ROLLS FOR MANUFACTURING TIE PLATES.

(Application filed Feb. 19, 1900.)

(No Model.) 2 Sheets-Sheet 2 HHIIIHII 1 'lll 1 mi 1| 1 m "a E w I 4 l1IHI II I l 1 y I II I l w I i i i INVENTOR ZZQW A, mmw.

UNITED STATES PATENT FFICEZ CHRISTIAN SI-IIVELY, OF CARNEGIE,PENNSYLVANIA, ASSIGNOR TO THE DIL- WORTH, PORTER & COMPANY, LIMITED, OFPITTSBURG, PENNSYLVANIA.

ROLLS FOR MANUFACTURING TlE PLATES.

SPECIFICATION forming part of Letters Patent No. 650,871, dated June 5,1900.

Original application filed December 7, 1899, Serial No. 739,565. Dividedand this application filed February 19, 1900. Serial No. 5,749. (Nomodel.)

To aZZ whom it may concern.- Be it known that I, CHRISTIAN SHIV'ELY, acitizen of the United States, residing at Carnegie, in the county ofAllegheny and State of Pennsylvania, have invented or discovered certainnew and usefulImprovements in Rolls for the Manufacture of Tie-Plates,of which improvements the following is a specification. The inventiondescribed herein relates to certain improvements in rolls for thepractice of the method described in an application filed December '7,1899, Serial No. 739,565, of which application this case is a division.The method set forth in said application consists, r 5 generallystated,in displacing the metal along the middle portions of oppositesides of an ingot or billet, thereby forming two pairs of ribsprojecting from opposite sides of the bar, and then bending or Workingthe ribs 011 one side outward and downward into the plane of the bodyportion of the bar.

The invention is hereinafter more fully described and claimed.

In the accompanying drawings, forming a 2 5 part of this specification,Figure 1 is a View in elevation of rolls having their passes constructedin accordance with my invention, and Fig. 2 is a similar View showingrolls having the final passes. 0 In the practice of my invention thepasses of the rolls 1, 1, and 2 are formed by collars 3 on the roll 2and by grooves 4 in the rolls 1 1, the bottoms of said grooves beingformed by collars 5. The grooves 4 of the passes A B C D, or those inwhich reduction is most largely elfected, gradually increase in widthand decrease in depth and have their side walls in planes at rightangles or approxi mately at right angles to the axes of the rolls o 1and 1. The collars 3 and 5 of these passes of the rolls are constructedand proportioned in accordance with rules well known in the art ofroll-making for effecting the gradual displacement of the metal alongthe middle portions of opposite sides of the ingot or billet and theshaping and pro portioning of the ribs a and b, formed by thedisplacement of the metal. As it is desired to incline the side walls ofthe ribs b, the collars employed for producing and shaping said ribshave their side walls d inclined or beveled.

The passes E, F, and G,while effectin g some reduction, are designedmore especially for bending or working the ribs a outward and downwardto the plane of the body of the bar. 5 5 The groove 4 of the pass E, inwhich is effected the preliminary tendency, has the outer portions ofits side walls flaring outwardly, and the side walls of the collar 3,which is considerably wider than the collar 5 of the preceding pass, arecorrespondingly flared.

Pass F is constructed to efiect a further bending or working down of theribs a, but without materially changing the shape ordimensions of theribs 1). In pass G the ribs a are brought into the plane of the body ofthe article, while the ribs Z) are maintained in the desired relation tothe body of the article at right angles thereto.

It will be understood by those skilled in the art that the number ofpasses may be varied by increasing or diminishing the proportions of theoperative portions of said passes. While the passes are shown as formedin the rolls for a three-high mill, they maybe formed, as will bereadily understood by the skilled rolldesigner, in the rolls for atwo-high mill.

my hand.

CHRISTIAN SHIVELY. Witnesses:

DARWIN S. WOLCOTT, F. E. GAITHER.

